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Which is the following is correct (symbo...

Which is the following is correct (symbol have their usual meaning)

A

P=PC

B

Intensity `=("Power")/("area")`

C

`B=(E)/(C)`

D

All of these

Text Solution

Verified by Experts

The correct Answer is:
D
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AAKASH INSTITUTE ENGLISH-ELECTROMAGNETIC WAVES-ASSIGNMENT (SECTION-A)(OBJECTIVE TYPE QUESTIONS (ONE OPTIONE IS CORRECT)
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  2. A ratio of contributions made by the electric field and magnetic field...

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  3. Which is the following is correct (symbol have their usual meaning)

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  4. Which of the following is a greenhouse gas ?

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  5. Which of the following is correct about microwave oven?

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  6. Which gas produced by the welding arcs are harmful the eyes ?

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  7. The magnetic field in a plane electromagnetic wave is given by B(y) ...

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  8. Thermoplies are used for the detection of

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  9. The bombardent of high energy electrons on a metal target of high atom...

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  10. The bombardent of high energy electrons on a metal target of high atom...

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  11. Which of the following is/are not used as diagnostic tool in medicine?

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  12. Diffefent types of electromagnetic waves are defined on the basis of

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  14. Ozone layer exists at oan altitude of

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  15. Which of the following can be used in cancer treatment ?

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  16. Earth satellite use the detectors of which electromagnetic waves ?

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  17. One cannot get tanned or sunburn through glass window because

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  18. The following can be arranged in decreasing order of wave number A. ...

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  19. The greatest technological importane of electromagnetic wave stem from...

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  20. Which of the following is /are correct ?

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